Heating apparatus for use with liquid fuel



J1me 1941- A. w. RICHARDSON 2,246,265

HEATING APPARATUS .FOR USE WITH LIQUID FUEL Filed March 24, 1939 s Sheets-Sheet 1 Aflhur W. Richardson June 17, 1941. A. w. RICHARDSON HEATING APPARATUS FOR USE WITH LIQUID FUEL Filed March 24, 1959 3 Sheets-Sheet 2 June 1941- A. w. RICHARDSON 2,246,265

HEATING APPARATUS FOR USE WITH LIQUID FUEL Filed March 24, 1939 3 Sheets-Sheet 3 fivenlizr Anhur' W. Richardson Patented June 17, 1941 HEATING APPARATUS FOR USE WITH LIQUID FUEL Arthur Whittaker Richardson, London, England, assignor to Shell Development Company, San Francisco, Calif., a corporation of Delaware Application March 24, 1939, Serial No. 264,009

In Great Britain April 2, 1938 2 Claims.

The invention relates to an improved heating apparatus for use with kerosene, parafiin, alcohol or any other fairly volatile liquid fuel.

The object of the invention is to provide a heating assembly for giving a controlled quantity of heat to a unit which is required to operate continuously for long periods, such for example as a refrigerator, incubator, brooder battery, greenhouse heater, etc.

In more detail, the objects of the invention are to provide a burner which can be set to give a maximum flame of any predetermined output of heat by a system which will not give the usual falling off of flame height within a few days such as occurs with wick burners, and a regulating valve which can be operated thermostatically as required, in an assembly which is suitable for carrying a large supply of oil with ready accessibility'for refilling purposes, and for servicing the burner.

The apparatus according to the invention comprises one or more trays adapted to slide into position into the appropriate unit and carrying wells adapted to receive supply tanks and connected to a common delivery line also carried by the tray or trays, a thermostatically controlled valvein said common delivery line and one or more-burner bowls adapted to receive burners of the perforated drum type.

In a preferred form the burner bowl or bowls is or are so located that when the apparatus is inserted into the appropriate unit the burner or collection of burners is enclosed in a casing carried by the said unit, said casing having a hinged flap to allow the burner to be inserted into and withdrawn from the casing by movement of the sliding apparatus. A preferred form of the apparatus according to the invention is illustrated in the accompanying drawings as applied, for example, to a refrigerator unit.

In the drawings Figure 1 is a front elevation and Figure 2 is a plan. Figure 3 is a section along the line A-A of Figure 2.

Referring to the drawings the apparatus comprises a tray l which is slidably mounted in guides 2 secured by channel support 2', to the associated unit. Upon the tray are carried wells 3 and 4, which receive liquid fuelv from tanks 5 and 6, which are carried by the tray I. These wells are connected by a pipe I and feed into a common delivery line 8. This delivery'line leads to a valve 9, which is thermostatically operated. The thermostatic control of this valve 9 carried by the stationary part of the refrigeratil tor unit, is generally illustrated at Ill and may advantageously be a thermostat of the bellows type. The connection between the thermostat and the valve is of a direct contact type without a rigid connection between the thermostat and the valve as indicated by link member l9 which is pivotably mounted on fixed member 20 so as to allow forremoval and replacement of the assembly without the necessity for undoing any connection. Member 2 l the movement of which is controlled by thermostat l0, serves to operate valve 9 by means of the pivotable link [9, which is pivotably attached to fulcrum element 20, as shown. The tray also carries a burner bowl ll connected to the valve 9 by a feed pipe l2. This burner bowl H is in the form of an annular groove in which is mounted the burner I3 which is of the perforated drum type. This burner 13 is located in a casing l4 carried by the unit and connected to the flue which is not shown, so that the burner is insulated from the remainder of the unit. The casing I4 has a hinged flap l5, which is connected by a rod Hi to an operating knob ll, by which it may be opened and closed when it is desired to withdraw the apparatus carrying the burner. If desired, this flap may be arranged to open automatically when the apparatus is withdrawn and to remain open until it has again been inserted, after which it is closed by operation of the rod l6.

The tray is withdrawn by the handle I 8.

It will be appreciated that instead of locating the complete assembly on a single tray, the various parts thereof may be mounted upon two or more trays each of which is slidably mounted in the unit; In this case the pipe lines connecting the trays will be flexible.

I claim:

1. In a fuel feeding and control unit of the type described including a chamber adapted to receive a burner assembly, a tray adapted to slide into said chamber, means fixedly mounted in said chamber to support said tray, a well for liquid fuel mounted in said tray and adapted to receive a supply tank, a liquid fuel burner mounted on said tray, a delivery conduit; between said well and said burner, a thermostatically controllable valve in said conduit, a thermostat fixedly mounted in said unit and direct contact actuating means between said thermostat and said valve non-rigidly connecting said thermostat and said valve, said actuating means comprising a fulcrum member rigidly mountedon said tray and a pivoted link member mounted on said fulcrum member.

2. Iirssfuei feeding and control unit 01 the type described including a chamber adapted to receive a burner assembly, a tray-adapted for slidable insertion into said chamber, a plurality of wells for liquid fuel mounted in said tray and adapted to receive upply tanks, a liquid fuel burner mounted on said tray, a plurality 01' liquid fuel carrying conduits leading from said wells to a common conduit, said common conduit leading to said burner, a valve in said common conduit including an actuating element extending therefrom, a thermostat fixedly mounted in said unit including a. temperature actuable element extending therefrom and pivoted linkage means rigidly mountedon and carried by said tray contacting said actuating element and said actuable element and non-rigidly connecting said actuable and actuating elements whereby the flow of liquid fuel through said valve is controlled by said thermostatically actuable element when said tray is inserted into said chamber and whereby said tray may be removed from said chamber 

